Describe the bug
A PySAM user was attempting to use Solar Resource Data to drive a PV simulation. The simulation provided worked fine with a weather file, but the solar resource data had a bad key "Elevation" instead of "elev". No error was thrown, but DC power was not calculated.

To Reproduce
TODO: upload example workbook

Expected behavior
The code should throw errors for this case.

Desktop (please complete the following information):

• Version PySAM 3.0.2, 4.0.0